Art of coring openings in the walls of cast hollow ware.



P-ATENTBD MAR. 3, 1.903.

l P. J. MCGUIRB. ART or GORING OPENINGS,l 1N THB WALLS of GASTHOLLOWWARE;

.N0 MODEL.

',FIGJ.

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VVAITNESSES wm@ Tommy mr' UNITED STAT-Esi PATENT OFFICE.

PETER J. MCGUIRE, OF BLAIRSVILLE,v PENNSYLVANIA, ASSIGNOR TO THECHAMPION SANITARY ENAMEL WARE CO., A CORPORATION OF PENN- SYLVANIA.

ART OF CORING OPENINGS IN THE WALLS F CAS-TKHOLLOW WARE.

SPECIFICATION forming part of Letters Patent No. 721,730, dated March 3,1903,

' Application led Augustlll. 1902i. Serial No. 119,606. (No model.)

To @ZZ whom/ z3 may concern:

Be it known that I, PETER J. MCGUIRE, a citizen of the UnitedStates,residing at Blairsville, in the county of Indiana and State ofPennsylvania, have invented a new and use-` ful Improvement intheArt ofOoring Openings in the Walls of Cast Hollow Ware, of which improvementthe following `is a specication.

the art of coring the overflow and water-service openings in the rear ofcast bath-tubs.

Heretofore it has been the custom to form` then filled with green sandand slicked otf flush with the outer surface of the gage, after whichoperation said gage is carefully removed, leaving the projecting coresof green sand. This manner offorming the cores has 3o its attendingdisadvantages, in that the re' moving of the gage must be accomplishedwith the greatest of care and by a skilled workman o`r portionsof thecores vthus formed will be broken away by the sand sticking to theopenings in the gage, or ifthe workman be nervous the least tremor willsuffice to dame' age the cores in removing the gage, which in eithercase will require dressing up of the cores. This dressing up of thecores will in 4o many instances be required of the Workman, no matterhow skilled in the art he may be, thereby consuming time and increasingthe cost of production. Furthermore, green-sand cores which are ofcomparative small area and having sharp edges dry out quickly andcrumbl'e away if exposed for any length of time to the heatedatmosphere, thereby making an imperfect opening in the casting.

With lny improvement in the art I am en- This invention relates toimprovements inV abled to produce bath-tub castings having clean-coredopenings therethrough, avoid the disadvantages heretofore encountered ingreen-sand cores, and consequently reduce the labor and expense ofmanufacture.

In the accompanying drawings I have illustrated :the manner and'meansemployed in carryingout my improvement, in which drawings- Figur-elisran end view of the drag portion of the mold, partly in'section,vshowing the practice of my invention. Fig. II is a side view ofa portion of the same, also partly in section. Fig. III is a perspectiveView of the cores, and Fig. IV is a plan view of the gage or templet forsetting said cores.

In the practice of my invention I provide baked cores I, 2, and 3 of therequired diam eters and thickness, through each of which is inserted anail or pin 4. I then apply to the end of the mold 5 the gage or templet6, which is provided with openings of such size as to permit an easyinsertion of the cores therein. The cores are then inserted in saidgage-openings and the nails or pins forced into the moldwall iiush withthe outer surface thereof, af-

ter which the gage is removed without the least difficulty, leaving thecores in position upon the mold-wall.

It is readily apparent from the foregoing description that this mannerof coring the openings in the tub is accomplished in much less'ti me andat less expense than in the manner heretofore practiced and producesmuch more perfect openings, that the cores will not crumble fromexposureto the heated atmosphere by the removal of the gage or by the closing ofthe other mold member thereover,

and that one not skilled in the art may as easily and quickly setthecores as one who is skilled. i

,Having thus fully described my improvements, what I claim, and desiretosecure by Letters Patent, is A v l. The herein-described method ofcoring openings in the walls of cast hollow wares,

which consists, after the mold members have been formed and removed fromthe pattern, in temporarily applying a gage to the wall of ro one ofsaid mold members to determine the position of said cores relative tothe mold, and then pinning baked-sand cores to said mold at the pointsso determined by said gage.

In testimony whereof I have hereunto signed my name in the presence oftwo subx5 soribing Witnesses.

PETER J. MCGUIRE. In presence of- COULTER WIGGINs, D. M. KIER.

